Inner sole for shoes



Aug- 10, 1937- A. cAGGlANo O 2,089,465

INNER SOLE FOR SHOES Filed 0G11. 9, 1935 INVENTOR,

' ATTORNEY.

Patented Aug. l0, 1937 ATEN'' FMC 2 Claims.

This invention relates to improvements in inner soles for shoes.

Existing art teaches the manufacture of outer soles having a relatively thin marginal portion and a relatively thicker central portion. It is obvious that, with an outer so-le thus formed, the inequality in the thiclmess of the outer sole must be compensated by some form of compleinentary inequality in :zo-operating portions of the shoe construction. It has been customary to provide an inner sole member, for use within the shoe upper, formed with an opening corresponding in shape and size to the shape and size of the thicker portion of the outer sole. This i5 construction is objectionable, as it presents a rough edge portion around the opening in the inner sole, which is in contact with the foot of a wearer, resulting in irritation and discomfort. To overcome this condition, it has been o necessary to install a secondary lining member over the inner sole to cover the opening in the inner sole. This adds to the expense of manufacture, and does not solve the problem, as the opening in the inner sole causes the thin lining member to wrinkle.

An object of this invention is to provide an imperforate inner sole formed on its under side with a recess complementary in shape and size to the thicker central portion of the outer sole with which it is to be used, whereby, when assembled with the outer sole in a shoe, the combination of outer and inner soles will be uniform in thickness throughout, and the upper surface of the inner sole will be smooth, continuous, and flat.

A preferred embodiment of my invention is illustrated in the accompanying drawing, in which:-

Fig. l is a plan view of an inner sole.

Fig. 2 is a longitudinal section of the same, taken on the line 2-2 of Fig. 1.

Fig. 3 is a cross, sectional view, taken on the line 3-3 of Fig. l.

Fig, 4 is a sectional view of a whole sole and template used in the manufacture of the inner sole, illustrated in Fig. 1.

Fig. 5 is a view similar to Fig. 4, illustrating another method of manufacture of the inner sole, shown in Fig. 1.

Fig. 6 is a partial, sectional view, showing an outer sole and welt assembled in a shoe with the inner sole, shown in Fig. l, and

Fig. 7 is a view similar to Fig. 6, with the welt omitted.

Referring now to the drawing in detail, in

which like numerals refer to like parts throughout:-

An inner sole I is formed with a recessed, or depressed portion 2, the outer edge, or outline 3 of which approximately parallels the outer edge, or outline 4, of the inner sole I. The recess 2, as shown, provides a central portion 5 of the inner sole l, which is relatively thinner than the marginal portion 6.

1t is necessary, in emcient and comfortable shoe construction, to have the recess 2 complementary in shape and size to a raised portion 'I on an outer sole 8 with which it is to be used. A simple means of manufacture, which insures this result, is illustrated in Figs. 4 and 5. A template .9, formed with an opening l0 of the desired shape, is placed on a whole sole II, and the sole and template are inserted in a leather splitting machine, which splits the Whole sole lI on a plane, indicated by the dash line I2. The two parts of the whole sole II, after splitting, comprise the outer sole 8 and the inner sole I. As both inner and outer soles are made from the same whole sole, in the same operation, it is obvious that the thick portion l of the outer sole 8 will be complementary to the thin portion 5 of the inner sole I. In the operation described above, and illustrated in Fig. 4, the template 9 is placed against, or on the smooth, polished surface i3 of the whole sole i l, in order to provide an outer sole having a smooth iinished under, or wearing surface. It is apparent, therefore, that, whereas, the inner sole resulting from this operation, will be imperforate, and its upper surface unbroken in any way, both upper and lower surfaces of the inner sole will be unfinished. It is sometimes desirable, especially in ladies shoes, to provide an inner sole having a smooth, polished, upper surface, similar to the wearing surface of the outer sole. Such an insole may be manufactured by the use of an imperforate template I4, (see Fig. 5), having the same shape, size, and outline as the portion 'l of the outer sole 8. The template I4 is placed on the polished surface I3 of an outer sole ll and, after inserting the combined template i4 and whole sole II in a splitting machine, adjusted to split the whole sole II on the line l5, the portion I6 becomes an inner sole corresponding in every particular to the inner sole I, except that the upper (or inner surface, when assembled in a shoe) surface of the inner sole I6 will be the polished surface of the whole sole II.

When either of the inner` soles I, or I6, is

assembled in a shoe in combination with an outer sole 8, as indicated in Fig. 7, or in combination with an outer sole 8 and Welt l1, as indicated in Fig. 6, the upper, or inner surface, of 5 the insole presents a at, unbroken surface to the foot of a wearer of the shoe.

What I claim is:- 1. In combination, in a shoe, an outer sole provided with a centrally disposed integral raised 10 portion, a Welt member provided with an opening having the same shape and size as the said raised portion, and an imperforate unitary inner sole provided with a recess in its underV surface complementary to said raised portion.

2. As an article of manufacture, a solid, unitary, insole having a sole portion and a shank portion and formed with a single recess of the same general shape as the insole, providing a marginal portion of uniform thickness and Width, said recess being substantially deeper in said sole portion than in said shank portion.

ANTHONY CAGGIANO. 

